Fair Value Measurement - Financial Assets and Liabilities Measured and Recognized at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015
Money Market Funds
Assets:
Assets, Fair Value Measurements	$ 9,212	$ 11,846
Level 1 \| Money Market Funds
Assets:
Assets, Fair Value Measurements	9,212	11,846
Earn Out Liability
Liabilities:
Liabilities, Fair Value Measurements	1,005	1,423
Earn Out Liability \| Level 3
Liabilities:
Liabilities, Fair Value Measurements	$ 1,005	$ 1,423

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

No definition available.

Name:	us-gaap_AssetsFairValueDisclosureRecurring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant